Northumberland, Pennsylvania demographics

Northumberland, PA demographics: median age 41.0; 22.0% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Northumberland borough, Pennsylvania · Incorporated borough · GEOID 4255456. The survey estimates a population of 3,866 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Northumberland is 41.0 years, with a 90% margin of error of 3.4 years. There are 1,726 households (±87). Age and household distributions show how these totals are composed; they do not establish which neighborhood suits a particular person.

Every count and share is an estimate. “±” is a 90% margin of error (MOE); pp means percentage points. Derived shares use the category count divided by the named universe. Aggregated category MOEs and percentage MOEs are approximate. A margin larger than half its estimate is flagged as low precision. Blank source uncertainty is shown as unavailable, never zero.

Age distribution and sex

City, state and U.S. estimates · ACS 2020–2024
Measure / survey universe	City estimate ± MOE	State estimate ± MOE	U.S. estimate ± MOE
Median age Total population · years	41.0 ±3.4	40.9 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 3,866
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Under 18	839 ±167	21.7% ±4.3 pp	20.4%	22.0%
18–34	749 ±165	19.4% ±4.3 pp	21.9%	22.8%
35–64	1,474 ±221	38.1% ±5.7 pp	38.1%	38.0%
65 and older	804 ±160	20.8% ±4.1 pp	19.5%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 3,866
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Male	1,924 ±158	49.8% ±4.1 pp	49.3%	49.5%
Female	1,942 ±157	50.2% ±4.1 pp	50.7%	50.5%

The age groups are mutually exclusive and cover the entire population. The sex categories follow this ACS table’s published classification; they are not a survey of gender identity.

Race and Hispanic origin

Race · B02001 · ACS 2020–2024 Total population: 3,866
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
White alone	3,584 ±198	92.7% ±5.1 pp	74.5%	61.0%
Black or African American alone	11 ±19 · low precision	0.3% ±0.5 pp · low precision	10.6%	12.2%
American Indian and Alaska Native alone	25 ±40 · low precision	0.6% ±1.0 pp · low precision	0.2%	0.9%
Asian alone	0 ±12 · low precision	0.0% ±0.3 pp · low precision	3.8%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.0%	0.2%
Some other race alone	104 ±144 · low precision	2.7% ±3.7 pp · low precision	3.7%	7.1%
Two or more races	142 ±102 · low precision	3.7% ±2.6 pp · low precision	7.1%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 3,866
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Not Hispanic or Latino	3,827 ±49	99.0% ±1.2 pp	91.3%	80.7%
Hispanic or Latino	39 ±47 · low precision	1.0% ±1.2 pp · low precision	8.7%	19.3%

Hispanic origin and race are separate questions. People of Hispanic or Latino origin may be of any race and appear in both tables. Do not add the Hispanic share to race shares. Race alone and two-or-more-race groups are the mutually exclusive categories of the race table.

Household types, children and living alone

Household types · B11001 · ACS 2020–2024 Households: 1,726
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Married-couple family	663 ±116	38.4% ±6.4 pp	46.2%	46.9%
Other family: male householder, no spouse present	222 ±108	12.9% ±6.2 pp	4.7%	5.1%
Other family: female householder, no spouse present	252 ±69	14.6% ±3.9 pp	11.5%	12.2%
Nonfamily: householder living alone	497 ±121	28.8% ±6.9 pp	30.9%	28.7%
Nonfamily: householder not living alone	92 ±76 · low precision	5.3% ±4.4 pp · low precision	6.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 1,726
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Households with people under 18	518 ±79	30.0% ±4.3 pp	27.0%	29.5%
Households without people under 18	1,208 ±126	70.0% ±6.4 pp	73.0%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 1,726
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
One-person nonfamily households	497 ±121	28.8% ±6.9 pp	30.9%	28.7%
Two-person households	683 ±145	39.6% ±8.2 pp	34.7%	33.8%
Three-person households	294 ±96	17.0% ±5.5 pp	14.9%	15.3%
Four-person households	166 ±65	9.6% ±3.7 pp	11.7%	12.6%
Five-person households	74 ±50 · low precision	4.3% ±2.9 pp · low precision	5.0%	5.9%
Six-person households	12 ±20 · low precision	0.7% ±1.2 pp · low precision	1.7%	2.2%
Seven or more people	0 ±17 · low precision	0.0% ±1.0 pp · low precision	1.1%	1.4%

A family household contains related people under the Census definition. A nonfamily household can contain one person or unrelated people sharing a home. Households with children can also appear in the household-type and size tables, so those tables must not be added together. Household estimates exclude people living in group quarters from the household universe.

Nativity and languages spoken at home

Nativity · B05002 · ACS 2020–2024 Total population: 3,866
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Native	3,836 ±27	99.2% ±0.5 pp	92.3%	85.9%
Foreign born	30 ±24 · low precision	0.8% ±0.6 pp · low precision	7.7%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 3,668
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
English only	3,600 ±98	98.1% ±1.6 pp	87.6%	77.7%
Spanish	25 ±40 · low precision	0.7% ±1.1 pp · low precision	5.6%	13.6%
French, Haitian, or Cajun	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.5%	0.7%
German or other West Germanic	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.9%	0.5%
Russian, Polish, or other Slavic	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.8%	0.7%
Other Indo-European	23 ±31 · low precision	0.6% ±0.8 pp · low precision	1.7%	2.0%
Korean	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.2%	0.3%
Chinese, including Mandarin and Cantonese	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.8%	1.1%
Vietnamese	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.3%	0.5%
Tagalog, including Filipino	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.2%	0.6%
Other Asian and Pacific Island	20 ±29 · low precision	0.5% ±0.8 pp · low precision	0.7%	1.1%
Arabic	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.4%	0.5%
Other and unspecified	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.5%	0.8%

Foreign born means not a U.S. citizen at birth; it includes naturalized citizens. Language categories describe speech at home among people age five and older. A language other than English at home does not establish that someone cannot speak English. This city page uses the published C16001 summary categories because the more detailed B16001 table does not provide these city records in this release.

Educational attainment

Highest completed education · B15003 · ACS 2020–2024 Population age 25 and older: 2,824
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Less than high school graduate	134 ±98 · low precision	4.7% ±3.5 pp · low precision	7.9%	10.4%
High school graduate or equivalency	1,284 ±199	45.5% ±6.7 pp	32.9%	26.0%
Some college, no degree	431 ±157	15.3% ±5.5 pp	15.1%	19.1%
Associate’s degree	353 ±122	12.5% ±4.3 pp	8.9%	8.8%
Bachelor’s degree	421 ±118	14.9% ±4.1 pp	20.9%	21.6%
Graduate or professional degree	201 ±91	7.1% ±3.2 pp	14.3%	14.1%

The denominator excludes residents under 25. Each person is counted in the highest attainment category they completed. This table does not measure the quality of local schools or the education level of every current student.

Residence one year earlier

Geographic mobility · B07003 · ACS 2020–2024 Population age 1 and older: 3,798
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Same house	3,469 ±153	91.3% ±3.9 pp	89.3%	87.7%
Moved within same county	159 ±117 · low precision	4.2% ±3.1 pp · low precision	5.6%	6.3%
Moved from a different county in the same state	108 ±93 · low precision	2.8% ±2.4 pp · low precision	2.6%	3.1%
Moved from a different state	62 ±61 · low precision	1.6% ±1.6 pp · low precision	1.9%	2.3%
Moved from abroad	0 ±12 · low precision	0.0% ±0.3 pp · low precision	0.4%	0.6%

These are respondents’ residence patterns one year before their survey response, pooled across the five-year window. They are not a net migration count for 2025. A person can move to a different house within the same city or county; moves within the same county should not automatically be interpreted as new arrivals to the city.

Health insurance, internet access and veterans

5.9% of Northumberland residents (±4.6 percentage points) had no health insurance coverage when surveyed, compared with 5.6% in Pennsylvania and 8.4% nationally. 87.1% of households subscribe to broadband of any type, including cellular data plans. A subscription is not the same as available service: the FCC National Broadband Map shows providers at a specific address.

City, state and U.S. shares · ACS 2020–2024
Measure	Northumberland	Pennsylvania	U.S.	Compared with Pennsylvania
People without health insurance Civilian noninstitutionalized population	5.9% ±4.6 pp · low precision	5.6%	8.4%	Not statistically different
Households with a broadband subscription Households	87.1% ±4.2 pp	89.7%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	4.8% ±2.6 pp · low precision	6.1%	6.2%	Not statistically different

Reading and reusing the estimates

The Census table links above lead to the original detailed tables. Counts, source universes and uncertainty are retained in the source observation download for Northumberland . Compare these figures with the same survey window; do not compare one city’s five-year estimate with another city’s annual estimate as though they measured the same period. For methods, see uncertainty and denominator calculations.

Read Northumberland housing and cost context or return to the city profile.